Planning An Assault

Planning An Assault enters the battlefield with 5 planning counters on it.
At the beginning of your upkeep, remove a planning counter from Planning An Assault. Put +1/+1 counters on any number of target creatures you control equal to the number of planning counters on Planning An Assault.
Once the last planning counter on Planning An Assault is removed, Scry 5, then draw cards equal to the greatest power among creatures you control. Exile Plan